{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["GENE"], "input": "Southern blot analysis of endonuclease - digested genomic DNA from primary chick embryo fibroblasts ( CEF ) suggested that MEK2 is a single - copy gene in this vertebrate species ."}
{"GENE": ["MEK2"]}